The first number is the "stones" of wood available, at 10 per Billet, 20 per Board, and 100 (with 20 wasted) per Building Log.

The second number indicates the original tree's quality, using the formula "Something like" 5100 + 150*(Q-1). Examples: 5100=Q1, 12300=Q49. The formula indicates 19500 for a Q100 tree, but it is actually 20000 so the formula is only "close".

When creating an item, its quality will be calculated based on your skill, the tool quality used to make it, the clothing being worn, and all the recipe's components. Each input of a crafted item has an influence that differs from recipe to recipe and can be viewed on each item's page.

If you are using a building like a Forge and anvil, the raw quality value of the building will be scaled by its current durability when crafting.

If you are using a building which provides a bonus to crafting quality, like a Blacksmith shop, the scaled quality value of the item being crafted will be increased by 20%.

If the building's effective quality is over 100, the excess will raise the overall quality of the item. In this way you can "make up" for poorer quality ingredients, provided you have an excellent quality building to do the work in. Note that crafted items cannot exceed 100 quality with this method.

A stacked Item merges qualities using math that averages the items. Two items with the quality 1 and 100 joined together will form two items in a stack with the same quality of the average of the two which is close to 50. It is recommended to store low quality and high quality items separately in its own stacks.

Players should be aware that splitting a stack of items with quality 50 will not create any other item with a different quality except for 50. Sometimes, the game can appear to store quality values independently in stacks, but this is false.

Ores, ingots and bars can have their quality increased by a master smith wearing a Blacksmith's Outfit, a bloomery and some time. By making several bars, then making several light helmets, recycling those helmets in the bloomery a couple of times, the quality will increase. Using the high quality Iron from the process above, making high quality tools will then further boost the process when it is done in the future.

NOTE: This method of "refining" metals into higher quality has since been changed. Recycling will now not lower quality metals, than with what you started. Metal quality can still be increased by using the Blacksmith's Outfit, high quality tongs and smelting on a crafting station that grants a bonus i.e Blacksmith's Shop. However recycling will no longerincrease overall quality and will insteaddecrease.

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